25 Ranges library [ranges]

adjacent_transform_view takes an invocable object and a view and produces a view whose $M^{\text{th}}$ element is the result of applying the invocable object to the $M^{\text{th}}$ through $(M+N-1{)}^{\text{th}}$ elements of the original view.

If the original view has fewer than N elements, the resulting view is empty.

The name views​::​adjacent_transform<N> denotes a range adaptor object ([range.adaptor.object]).

Given subexpressions E and F and a constant expression N:

• (2.1)
  If N is equal to 0 and decltype((E)) models forward_range, views​::​adjacent_transform<N>(E, F) is expression-equivalent to ((void)E, views​::​zip_transform(F)), except that the evaluations of E and F are indeterminately sequenced.
• (2.2)
  Otherwise, the expression views​::​adjacent_transform<N>(E, F) is expression-equivalent to adjacent_transform_view<views​::​all_t<decltype((E))>, decay_t<decltype((F))>, N>(E, F).